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stellarik [79]
2 years ago
6

Can some one answer my question i put up plz and ill mark you the b and give you 50 points

Mathematics
2 answers:
GenaCL600 [577]2 years ago
7 0

Answer:

what is your question

Step-by-step explanation:

elena55 [62]2 years ago
5 0

Answer:

Hewo Asuna here

Sure!

Step-by-step explanation:

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Using Cramer’s Rule, what is the value of x in the system of linear equations below? x+3y=16 3x+y=8
alexdok [17]
Cramer's rule works as follows:
x+3y=16
3x+y=8
Then 
x=Dx/D
y=Dy/D
where Dx,Dy,D are 2x2 matrices formed from of coefficients and right hand side.
D=
1 3
3 1
=1-9=-8
Dx=matrix D with first column replaced by the vector [16,8]=
16,3
8 1
=16-24
=-8

Dy=matrix D with second column replaced by the vector [16,8]=
1 16
3 8
=8-48
=-40

Therefore
x=-8/-8=1
y=--40/-8=5

Check:
x+3y=1+3(5)=16
3x+y=3(1)+5=8   ok.
4 0
2 years ago
Question 4(Multiple Choice Worth 1 points) (06.07 LC) Which expression is equal to 3x? Ox+ 3 Ox+ x + x O x + x2 0 2x + 1 ting​
Firdavs [7]

Answer:

the answer is :.......

x+x+x

6 0
3 years ago
Any number that can be written in the form of a fraction are ______________. They can be terminating and repeating decimals. *
lara31 [8.8K]

Answer:

Rational numbers

Step-by-step explanation:

7 0
2 years ago
The Library is 1.75 miles directly north of the school the park is 0.6 miles directly south of the school.How far is the library
statuscvo [17]

Answer: 2.35 miles

Check out the attached image below. A drawing often helps visualize the problem. In this case, all three locations are along the same vertical line. The distances 1.75 and 0.6 can be added up as those smaller segments form the entire distance we want (from park to library). So that's how I got 1.75+0.6 = 2.35

5 0
2 years ago
Read 2 more answers
(2x-12)=56 how do you find x
Vlada [557]

Answer:

  • (2x-12)=56
  • 2x = 56 + 12
  • 2x = 68
  • x = 68/2
  • x = 34

Verification:

  • (2×34-12)=56
  • 68-12=56
  • 56=56

Hence verified ✅

hope it's helps you

4 0
2 years ago
Read 2 more answers
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